Impregnated fabrics and method of producing same.



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Be it known that I, RoBnRT' ATEaLsTAN Mann, a-citiz'en of the UnitedStates, residing at Norfolk, in the county of Norfolk' and State ofVirginia, have invented certain new and useful Improvements in Impreg-'nated Fabfics and Methods of Producing Same, of which the following isa specifica tion.

In-mycopending application. Serial Numberj 811,911, filed January 13,1914: (now Patent No. 1,121,647), I have-described and I claimed'aprocessof treating textile material, particularly ropes, fabrics andarticles comprising. the same, with a mixture containing paraflinwarm-naphthalene and diatomaceous earth. In anothercopendingflapplication Serial Number 811,913, filed January 13, 1914, Ihave described and claimed the treatment of leather with the samemixture. While these two processes have been found to give excellentresults, it is found advisable under certain conditions, to omit the useof the diatomaceous earth, andto impregnate the material with a mixtureof paraflinwax and naphthalene, applied at a temperature above theboilingpoint of water, said mixture being free from diatomaceous earth,or other material having a similardegree of hardness, since suchmaterial may injure the hands of workmen using ropes, etc, containingthe same.

In my prior Patent'No. 1,023,784, I have described and claimed thetreatment of wood, with a mixture including p'araflinand naphthalene,applied at a temperature below the boiling point of water, for thepurpose of preserving the wood. In the present process, however, I applythis mixture to 4 0 leather or textile materials such as above retionbeing found to be advantages.

In carryin out my process I first prepare a bath of mo ten parafin 100parts, containing naphthalene 3 to 5.parts or up to 10 parts to which Imay add any suitable dye soluble in the menstruum, and under certainconditions I may also add Paris green 1 to 2 parts, and materialscapable of reducing.

the inflammability of the product, although the addition or omission ofeither of these Specification of Letters Patent.

5' last three is optional. The proportions of par'aflin and naphthalenemaybe "varied somewhat, but in all cases I preferably em- I PatentedJan.4,1916.

' I Application flled November/121914.. Serial'm).871,818.

ploy a relatively small amount of, naphthaone, as compared with theparafiin, 10%

being about the upper limit.

The material to betreated may. be in its air drycondition,".'coritaining say from 5 to 15 per cent. of moisture,although for securing heav'yimpregnation-it is advisable to sometimesemploy material containing considerably more moisture than this; In factif desired I may wet the rope or fabric, or

textile material composed of, or containing,

rope or fabric or leather or other material to be treated, by soakingthe same in water prior to immersion in the'bath of molten parafinandnaphthalene. After immersion of the material into the bath, while thebath is maintained at a temperature of say 230 to 250'F., the bath maybe maintained at this temperature for a few minutes, five minutes beingordinarily sufficient. After this the material mav be transferred'toanother bath, of the same or similar composition, or

the first 'bath may be allowed to cool, in

order to secure a heavy impregnation to a ject of the second bath is toproduce a heavy impregnation of the material, and to leave the coatingof the mixture containing parafiin and naphthalene upon the surface ofthe textile material.

Among treated 1n accordance with this process are fabric, rope, yarn,string, duck, canvas, nets for fishing, hammocks, bags and bagging,

andin fact any materials made from'textile materials, also leather,and-materials made lfrlpm leaher, such as bags, boots and the In theappended claims the term textile material is intended to cover any ofthese materials, and to cover any materials made from textile threads,or from leather, or from both these materials.

the materials which may be In connection with the impregnation of muchless resistance than do untreated rope, and "said ropes are alsopreserved against dry rot, mildew, attack by barnacles, and other marineinsects, and the like. Ropes so treated, are also particularlyapplicable for I with a homogeneous, molten mixture, solid at ordinarytemperature, said mixture containing paraflin and a relatively smallamount of naphthalene, and being free from hard materials. i

2. A process of treating textile materials which comprises subjectingthe same to the action of a bath containing parafiin and naphthalene,maintained at a temperature above 212 F., and thereafter subjectingthe 1same to the action of a bath containing paraflin and naphthalene at atemperature below 212 F., the amount of naphthalene in both these bathsbeing much less than the amount of paraffin, and both baths being freefrom hard materials.

3. A process of treating rope which comprises subjecting the same to theaction of a bath containing paraflin and naphthalene,

maintained at a temperature above 212 F, and thereafter subjecting thesame to the action of a bath containing paraffin and naphthalene at atemperature below 212 F, the amount of naphthalene in both these bathsbeing much less thanthe amount of paraffin, and both baths being freefrom hard materials.

4. A process 'of treating textile materials which comprises subjectingthe same to the action of a bath containing paraffin and a relativelysmall amount of naphthalene, said bath being free from hard materials,at a temperature of from 240 to 260 F, removing the materials from thebath when the temperature has fallen somewhat.

-5. Textile material impregnated with a homogeneous mixture of parafiinand naphthalene, said mixture being solid at ordinary temperature andbeing free from hard materials, the proportion of naphthalene beingrelatively small.

6. Rope impregnated with a homogeneous mixture of parafiin andnaphthalene, said mixture being solid at ordinary temperature and beingfree from hard materials, the. proportion of naphthalene beingrelatively small.

In testimony whereof I aflix my signature in presence of two witnesses.

ROBERT ATHELSTAN MARE. Witnesses: P. C. WARNOD, Jn, CHESTER K. Scorn

